MOLLUSCA.—HEDLEY. 35 
Two dozen were gathered, November 17th, 1912, by Mr. H. Hamilton, at the north 
end of Macquarie Island. He noted that the form was “ abundant on rocks washed 
by the sea at low water.” — 
NorocHiron miranbus Zvele. 
Notochiton mirandus Thiele, Deutsch. Tiefsee Exped., ix., 1906, p. 332, pl. xxix., figs. 
11-16; Id., Thiele, Deutsch. Siidpol. Exped., Zool., x., 1908, p. 12. 
Chetopleura miranda Smith, Nat. Antarct. Exped., ii., 1907, p. 1, pl. iL, figs. 13-184. 
Here the third valve is always entirely red, the largest of the series reaches a length 
of 120mm. One small specimen, December 31st, 1913, from 157 fathoms, ooze, in the 
D’Urville Sea, in South Lat. 66° 32’ and Hast Long. 141° 39’. Three large individuals, 
January 31st, 1914, from 110 fathoms, hard ground, off the Shackleton Ice-shelf, in 
South Lat. 64° 32’ and East Long. 97° 20’. 
CaLLocuiton Gauss! Thiele. 
Callochiton (Icoplax) gaussi Thiele, Deutsch. Siidpol. Exped., x., 1908, p. 15, pl. 1, figs. 
27-32. 
The series before me have the fourth valve always stained orange red. The largest 
individual attains a length of 22mm. 
One, December 14th, 1913, from 45-50 fathoms; and seven, December 22nd, 1913, 
from 350-400 fathoms, both in Commonwealth Bay, Adelie Land. One, December 
31st, 1913, from 157 fathoms, ooze, in the D’Urville Sea, in South Lat. 66° 32’ and Hast 
Long. 141° 39’. One, January 27th, 1914, in 120 fathoms, hard ground, in the Davis 
Sea, in South Lat. 66° 8’ and East Long. 94° 17’. One adhering to a valve of Pecten 
colbecki, January 29th, 1914, from 325 fathoms, ooze, off the Shackleton Ice-shelf, in 
South Lat. 65° 6’ and Hast Long. 96° 13’. 
PLAXIPHORA AUREA Spalowsky. 
Chiton aureus Spalowsky, Prodr. Syst. Test., 1795, p. 88, pl. xi, fig. 6; Id., Pilsbry, 
“ Nautilus,” xxv., 1911, p.36; Id., Iredale, Trans. N.Z. Inst., xlvii., (1914) 1915, 
p. 424. 
Chiton carmichaelis Wood, Index Test., 1828, Suppl., pl. i., fig. 10. 
Chiton setiger King, Zool. Journ., v., 1831, p. 358. 
Plaxiphora setigera Melvill and Standen, Journ. of Conch., x., 1901, p. 46, and Trans. 
Roy. Soc. Edinb., xlviii., 1912, p. 342. 
Plaxifora campbelli Filhol, Compt. Rend., xci., 1880, p. 1095, and Miss. de Vile Campbell, 
lii., 1885, p. 540; Jd., Iredale, Proc. Malac. Soc., ix., 1910, p. 95. 
